Support x-kubernetes-int-or-string: true from schema

[wscoble]

Feature Description

Problem Statement:

I would like to use flagger (and other) controllers that have fields configured with x-kubernetes-int-or-string: true meaning that the field can be an integer or a string. KRO doesn't seem to work with this right now.

The dummy CR generation doesn't know how to handle this configuration yet and fails.

Proposed Solution:

The dummy CR generator should use an integer for CR generation.

Alternatives Considered:

I've patched the flagger schema to force int or string and it works, but since their schema is valid and widely used, kro should probably handle their case.

Additional Context:

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